Design me a smart espresso scale that I can connect my phone to. it should be powered by USBC and a single cell lipo. It should also have a segment display/screen. It will need a way to store scale data locally as well. Fill in the rest of the details yourself.
I’ll define the scale architecture and requirements, check for reusable reference blocks, and propose a concrete build plan before creating the schematic.
I defined the architecture, power budget, interfaces, and functional blocks in the Project Specification and Functional Block Plan. The design uses ESP32-S3 BLE, a NAU7802 load-cell ADC, OLED segment-style UI, SPI NOR logging, USB-C/LiPo power-path charging, and a 3.3 V system rail; suitable reference blocks were identified for the MCU, measurement, and charging sections.
Confirm this architecture and I’ll proceed with the complete schematic.